* Add osprofiler wsgi middleware. This middleware is used for 2 things:
1) It checks that person who want to trace is trusted and knows
secret HMAC key.
2) It starts tracing in case of proper trace headers
and adds the first wsgi trace point with info about the HTTP request
* Add initialization of osprofiler on start of a service
Currently that includes oslo.messaging notifier instance creation
to send Ceilometer backend notifications.
oslo-spec: https://review.openstack.org/#/c/103825/
python-novaclient change: https://review.openstack.org/#/c/254699/
based on: https://review.openstack.org/#/c/105096/
Co-Authored-By: Boris Pavlovic <boris@pavlovic.me>
Co-Authored-By: Munoz, Obed N <obed.n.munoz@intel.com>
Co-Authored-By: Roman Podoliaka <rpodolyaka@mirantis.com>
Co-Authored-By: Tovin Seven <vinhnt@vn.fujitsu.com>
Implements: blueprint osprofiler-support-in-nova
Change-Id: I82d2badc8c1fcec27c3fce7c3c20e0f3b76414f1
Dina Belova